The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
The fact that fly fishermen need broad principles of biology, not a collection of exceptions, makes it difficult to handle this family.
In 4189 records from GBIF, adults of this family have mostly been collected during August (25%), July (22%), June (16%), September (15%), October (8%), and May (7%).
In 2081 records from GBIF, this family has been collected at elevations ranging from -30 to 38927 ft, with an average (median) of 1921 ft.
Diet: Algae, decaying leaves and wood, decaying animals
Shelter type: Tube with silk on the inside and plant matter, sand, or gravel on the outside